Overall good headset. Noise Cancelling but unconvincing.

Initially the sound was extremely poor, heavily distorted and overdriven. Reason: The volume must at the transmitter unit (here: Sony Xperia Z smartphone) can not be set to maximum. When set to about 3/4 of the maximum volume the sound was good.

Sound in music: A little bass emphasized, but not exaggerated or disturbing. I will lift up the equalizer treble slightly and thus get a pleasant sound for rock and pop. This also applies for the Bluetooth operation, with cable the sound is still some way defined.

Telephone operation: very good, no complaints on the transmitter or receiver side.

Noise canceling function: unconvincing. Are filtered predominantly low frequencies, there is a total of too much distracting by. The hope, I could read on the terrace despite rasenmähender neighbors in peace, was disappointed.

Technology: The pairing works with all tried out devices (Lenovo notebook with Ubuntu 14:04 and Nexus Tablet and Sony Smartphone with Android 4.4.4) well. Range: In conjunction with the Xperia Z in the apartment at about 10-15 m perfectly without any stuttering or termination of contacts.

Conclusion: I was looking for a Bluetooth headset for music and audio books with an acceptable sound. These claims are from the device more than fulfilled. I can also make calls, is a nice plus. Who wants to work undisturbed in an open plan office, should test the NC function beforehand.